
Publikationen von Barbara Helm
Alle Typen
Zeitschriftenartikel (50)
2019
Zeitschriftenartikel
29 (21), S. 3714 - 3719.e4 (2019)
Evolutionary response to climate change in migratory pied flycatchers. Current Biology 2016
Zeitschriftenartikel
540 (7631), S. 109 - 113 (2016)
Unexpected diversity in socially synchronized rhythms of shorebirds. Nature
Zeitschriftenartikel
47 (3), S. 417 - 427 (2016)
Evaluation of two methods for minimally invasive peripheral body temperature measurement in birds. Journal of Avian Biology 2015
Zeitschriftenartikel
282 (1817), 20151453 (2015)
Disrupted seasonal biology impacts health, food security and ecosystems. Proceedings of the Royal Society B: Biological Sciences 2014
Zeitschriftenartikel
11, 85 (2014)
Behavioural response of a migratory songbird to geographic variation of song and morphology. Frontiers in Zoology
Zeitschriftenartikel
217 (9), S. 1510 - 1518 (2014)
Genetic and phenotypically flexible components of seasonal variation in immune function. The Journal of Experimental Biology 2013
Zeitschriftenartikel
10, 60 (2013)
Urban-like night illumination reduces melatonin release in European blackbirds (Turdus merula): Implications of city life for biological time-keeping of songbirds. Frontiers in Zoology
Zeitschriftenartikel
280 (1763), 20130593 (2013)
Clocks for the city: Circadian differences between forest and city songbirds. Proceedings of the Royal Society B: Biological Sciences
Zeitschriftenartikel
280 (1765), 20130016 (2013)
Annual rhythms that underlie phenology: Biological time-keeping meets environmental change. Proceedings of the Royal Society B: Biological Sciences
Zeitschriftenartikel
10 (81), 20121047 (2013)
A strong magnetic pulse affects the precision of departure direction of naturally migrating adult but not juvenile birds. Interface: Journal of the Royal Society
Zeitschriftenartikel
280 (1764), 20131016 (2013)
When the sun never sets: Diverse activity rhythms under continuous daylight in free-living arctic-breeding birds. Proceedings of the Royal Society B: Biological Sciences 2012
Zeitschriftenartikel
279 (1742), S. 3527 - 3534 (2012)
A tropical bird can use the equatorial change in sunrise and sunset times to synchronize its circannual clock. Proceedings of the Royal Society B: Biological Sciences
Zeitschriftenartikel
29 (8), S. 1062 - 1071 (2012)
Effects of temperature on circadian clock and chronotype: An experimental study on a passerine bird. Chronobiology International
Zeitschriftenartikel
153 (Suppl. 1), S. 181 - 191 (2012)
Physiological and behavioral responses of migrants to environmental cues. Journal of Ornithology
Zeitschriftenartikel
215 (19), S. 3459 - 3466 (2012)
Annual cycles of metabolic rate are genetically determined but can be shifted by phenotypic flexibility. The Journal of Experimental Biology 2010
Zeitschriftenartikel
23 (5), S. 1050 - 1063 (2010)
Wing pointedness associated with migratory distance in common-garden and comparative studies of stonechats (Saxicola torquata). Journal of Evolutionary Biology
Zeitschriftenartikel
277 (1698), S. 3335 - 3342 (2010)
Heritable circadian period length in a wild bird population. Proceedings of the Royal Society B: Biological Sciences
Zeitschriftenartikel
156 (4), S. 537 - 540 (2010)
Repeatability and individual correlates of microbicidal capacity of bird blood. Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology
Zeitschriftenartikel
365 (1555), S. 3113 - 3127 (2010)
Phenology, seasonal timing and circannual rhythms: Towards a unified framework. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences 2009
Zeitschriftenartikel
47 (2), S. 125 - 133 (2009)
Auswirkung von Spätbruten auf Mauser und Rückkehrrate bei einem Weitstreckenzieher, dem Steinschmätzer (Oenanthe oenanthe). Vogelwarte - Zeitschrift für Vogelkunde
Zeitschriftenartikel
49 (5), S. 563 - 579 (2009)
Geographically distinct reproductive schedules in a changing world: Costly implications in captive Stonechats. Integrative and Comparative Biology
Zeitschriftenartikel
212 (9), S. 1259 - 1269 (2009)
Circannual basis of geographically distinct bird schedules. The Journal of Experimental Biology
Zeitschriftenartikel
4 (7), e6170 (2009)
Migratory status is not related to the susceptibility to HPAIV H5N1 in an insectivorous passerine species. PLoS One
Zeitschriftenartikel
24 (3), S. 225 - 231 (2009)
Under cover of darkness: Nocturnal life of diurnal birds. Journal of Biological Rhythms
Zeitschriftenartikel
56 (1), S. 163 - 168 (2009)
Persistent diel melatonin rhythmicity during the Arctic summer in free-living willow warblers. Hormones and Behavior
Zeitschriftenartikel
276 (1662), S. 1685 - 1693 (2009)
Genetic modulation of energy metabolism in birds through mitochondrial function. Proceedings of the Royal Society B: Biological Sciences
Zeitschriftenartikel
279 (2), S. 129 - 136 (2009)
Quantitative genetics parameters show partial independent evolutionary potential for body mass and metabolism in stonechats from different populations. Journal of Zoology 2008
Zeitschriftenartikel
150 (4), S. 687 - 697 (2008)
Plasticity of moult and breeding schedules in migratory European Stonechats Saxicola rubicola. Ibis
Zeitschriftenartikel
48 (3), S. 1145 - 1154 (2008)
Phylogenetic relationships, biogeography and speciation in the avian genus Saxicola. Molecular Phylogenetics and Evolution
Zeitschriftenartikel
136, S. 14 - 17 (2008)
En busca de los origenes de las tarabillas del mundo. La Garcilla
Zeitschriftenartikel
150 (4), S. 452 - 457 (2008)
Repeatability and individual correlates of basal metabolic rate and total evaporative water loss in birds: A case study in European stonechats. Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology
Zeitschriftenartikel
363 (1490), S. 411 - 423 (2008)
Avian circannual clocks: Adaptive significance and possible involvement of energy turnover in their proximate control. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences
Zeitschriftenartikel
149 (3), S. 423 - 430 (2008)
Distinct taxonomic position of the Madagascar stonechat (Saxicola torquatus sibilla) revealed by nucleotide sequences of mitochondrial DNA. Journal of Ornithology 2007
Zeitschriftenartikel
35 (1-2), S. 79 - 91 (2007)
Migration speed and scheduling of annual events by migrating birds in relation to climate change. Climate Research
Zeitschriftenartikel
94 (8), S. 693 - 696 (2007)
Daytime light intensity affects seasonal timing via changes in the nocturnal melatonin levels. Die Naturwissenschaften 2006
Zeitschriftenartikel
37 (6), S. 533 - 540 (2006)
Zugunruhe of migratory and non-migratory birds in a circannual context. Journal of Avian Biology
Zeitschriftenartikel
44 (1), S. 26 - 27 (2006)
Jahreszeitliches Verhalten in verschiedenen Lebensraumen: Vergleichende Studien an Schwarzkehlchen. Vogelwarte - Zeitschrift für Vogelkunde
Zeitschriftenartikel
94 (1), S. 33 - 44 (2006)
Movements of European Stonechats Saxicola torquata according to ringing recoveries. Ardea
Zeitschriftenartikel
4 (4), S. 611 - 614 (2006)
Migratory restlessness in an equatorial nonmigratory bird. PLoS Biology
Zeitschriftenartikel
72 (2), S. 245 - 262 (2006)
Sociable schedules: Interplay between avian seasonal and social behaviour. Animal Behaviour
Zeitschriftenartikel
147 (2), S. 221 - 233 (2006)
A framework for the study of genetic variation in migratory behaviour. Journal of Ornithology 2005
Zeitschriftenartikel
146 (4), S. 348 - 354 (2005)
Carry-over effects of day length during spring migration. Journal of Ornithology
Zeitschriftenartikel
1046, S. 216 - 227 (2005)
Flexible seasonal timing and migratory behavior: Results from stonechat breeding programs. Annals of the New York Academy of Sciences 2004
Zeitschriftenartikel
27, S. 64 - 84 (2004)
Combatting misogyny? Responses to Nietzsche by Turn-of-the-Century German Women. Journal of Nietzsche Studies 2003
Zeitschriftenartikel
91, S. 135 - 139 (2003)
Coping with extreme conditions: Are desert birds different? Ardea
Zeitschriftenartikel
34 (1), S. 124 - 128 (2003)
An integrative framework for understanding the origin and evolution of avian migration. Journal of Avian Biology 2002
Zeitschriftenartikel
24, S. 579 - 594 (2002)
Programmed patterns of territorial aggression in first-year European and African Stonechats (Saxicola torquata rubicola and S. t. axillaris). Ökologie der Vögel 2001
Zeitschriftenartikel
1 (1), S. 31 - 42 (2001)
Nestling growth and post-juvenile molt under tight seasonal schedule: Stonechats from Kazakhstan, Saxicola torquata maura. Avian Science 2000
Zeitschriftenartikel
60 (6), S. 899 - 902 (2000)
Human handedness causes directional asymmetry in avian wing length measurements. Animal Behaviour 1999
Zeitschriftenartikel
116 (3), S. 589 - 603 (1999)
Timing of postjuvenal molt in African (Saxicola torquata axillaris) and European (Saxicola torquata rubicola) Stonechats: Effects of genetic and environmental factors. The Auk